Chocolate Gravy

2 heaping tablespoons of cocoa
1 cup of sugar
3 tablespoons of flour
4 cups of milk
1 teaspoon of vanilla
1 tablespoon of butter

Mix the cocoa, flour, and the sugar in a pot with a fork or whisk until well blended. Add all of the other ingredients and bring to a boil, stirring .constantly, over medium heat. Continue cooking until the gravy is the desired thickness. Serve hot over biscuits with lots of butter. Can be made ahead of time and put in refrig....then just warmed up when ready to serve.